Replace KB unit with KiB (#4293)

kB (*kilo* byte) unit means 1000 bytes, whereas KiB ("kibibyte")
means 1024 bytes. KB was misused: replace kB or KB with KiB when
appropriate.

Same change for MB and GB which become MiB and GiB.

Change the output of Tools/iobench/iobench.py.

Round also the size of the documentation from 5.5 MB to 5 MiB.

6 files changed, 8 insertions, 8 deletions

diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
index 01f1671..d597987 100644
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -801,7 +801,7 @@ _hashlib_scrypt_impl(PyObject *module, Py_buffer *password, Py_buffer *salt,
     }
 
     if (maxmem < 0 || maxmem > INT_MAX) {
-        /* OpenSSL 1.1.0 restricts maxmem to 32MB. It may change in the
+        /* OpenSSL 1.1.0 restricts maxmem to 32 MiB. It may change in the
            future. The maxmem constant is private to OpenSSL. */
         PyErr_Format(PyExc_ValueError,
                      "maxmem must be positive and smaller than %d",
diff --git a/Modules/_io/fileio.c b/Modules/_io/fileio.c
index cc7061f..b6755b8 100644
--- a/Modules/_io/fileio.c
+++ b/Modules/_io/fileio.c
@@ -41,7 +41,7 @@
 #if BUFSIZ < (8*1024)
 #define SMALLCHUNK (8*1024)
 #elif (BUFSIZ >= (2 << 25))
-#error "unreasonable BUFSIZ > 64MB defined"
+#error "unreasonable BUFSIZ > 64 MiB defined"
 #else
 #define SMALLCHUNK BUFSIZ
 #endif
diff --git a/Modules/_io/winconsoleio.c b/Modules/_io/winconsoleio.c
index 6600fde..30d1c76 100644
--- a/Modules/_io/winconsoleio.c
+++ b/Modules/_io/winconsoleio.c
@@ -31,7 +31,7 @@
 #if BUFSIZ < (16*1024)
 #define SMALLCHUNK (2*1024)
 #elif (BUFSIZ >= (2 << 25))
-#error "unreasonable BUFSIZ > 64MB defined"
+#error "unreasonable BUFSIZ > 64 MiB defined"
 #else
 #define SMALLCHUNK BUFSIZ
 #endif
diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
index 99611ee..aaa13da 100644
--- a/Modules/_threadmodule.c
+++ b/Modules/_threadmodule.c
@@ -1276,10 +1276,10 @@ exception is raised, and the stack size is unmodified.  32k bytes\n\
 sufficient stack space for the interpreter itself.\n\
 \n\
 Note that some platforms may have particular restrictions on values for\n\
-the stack size, such as requiring a minimum stack size larger than 32kB or\n\
+the stack size, such as requiring a minimum stack size larger than 32 KiB or\n\
 requiring allocation in multiples of the system memory page size\n\
 - platform documentation should be referred to for more information\n\
-(4kB pages are common; using multiples of 4096 for the stack size is\n\
+(4 KiB pages are common; using multiples of 4096 for the stack size is\n\
 the suggested approach in the absence of more specific information).");
 
 static PyMethodDef thread_methods[] = {
diff --git a/Modules/faulthandler.c b/Modules/faulthandler.c
index 9b51f7e..33edc05 100644
--- a/Modules/faulthandler.c
+++ b/Modules/faulthandler.c
@@ -14,8 +14,8 @@
 #  include <sys/resource.h>
 #endif
 
-/* Allocate at maximum 100 MB of the stack to raise the stack overflow */
-#define STACK_OVERFLOW_MAX_SIZE (100*1024*1024)
+/* Allocate at maximum 100 MiB of the stack to raise the stack overflow */
+#define STACK_OVERFLOW_MAX_SIZE (100 * 1024 * 1024)
 
 #define FAULTHANDLER_LATER
 
diff --git a/Modules/hashtable.c b/Modules/hashtable.c
index 0547a6d..e6f8daf 100644
--- a/Modules/hashtable.c
+++ b/Modules/hashtable.c
@@ -243,7 +243,7 @@ _Py_hashtable_print_stats(_Py_hashtable_t *ht)
            ht, ht->entries, ht->num_buckets, load * 100.0);
     if (nchains)
         printf("avg_chain_len=%.1f, ", (double)total_chain_len / nchains);
-    printf("max_chain_len=%" PY_FORMAT_SIZE_T "u, %" PY_FORMAT_SIZE_T "u kB\n",
+    printf("max_chain_len=%" PY_FORMAT_SIZE_T "u, %" PY_FORMAT_SIZE_T "u KiB\n",
            max_chain_len, size / 1024);
 }
 #endif